#include<stdio.h>
#include<math.h>
int main()
{
 	double a,b,c,disc,x1,x2,realpart,imagpart;
 	scanf("%lf%lf%lf",&a,&b,&c);
 	printf("The equation");
 	if(fabs(a)<=1e-6)
 		printf("is not a quadratic");
 	else
 	{
		disc=b*b-4*a*c;
		if(fabs(disc)<=1e-6)
			printf("has two equal roots:%8.4f\n",-b/(2*a));
		else
			if(disc>1e-6)
			{
				x1=(-b+sqrt(disc))/(2*a);
				x2=(-b-sqrt(disc))/(2*a);
				printf("has distinct real roots:%8.4f and %8.4f\n",x1,x2);
			}
			else
			{
				realpart=-b/(2*a);
				imagpart=sqrt(-disc)/(2*a);
				printf("has complex roots:\n");
				printf("%8.4f+%8.4fi\n",realpart,imagpart);
				printf("%8.4f-%8.4fi\n",realpart,imagpart);
			}
	}
 	return 0;
}

